SS-SVX11K-EN
55
Installation Mechanical — EVP
EVP Chilled Water Piping
Requirements
• Install properly sized chilled water pipe between the
EVP chiller and the supporting equipment. See
Chilled Water Piping section for recommended
system components and guidelines.
• Install supply and return water side pressure
gauges (with isolation valves.)
• Install thermometers in water supply and return
piping.
• Install isolation (shutoff) valves in water supply and
return piping.
• Install a properly sized strainer in the supply piping.
• Install blowdown (recommended) valve or plug in
strainer cleanout.
• Install a balancing valve in the return piping.
• Install a water flow switch in the return piping.
• Install chilled solution sensor well and sensor in the
water outlet piping.
• Install freezestat well and freezestat bulb in the
water outlet piping.
• Install chiller piping drain with shutoff valve.
• Install 1/2” x 14 NPT stainless steel or PVC plug in
braze plate chiller body.
• Flush the chilled solution piping system, if
applicable.
• Connect the chilled solution piping to the chiller.
• The braze plate chiller is intended for indoor
application. If a subfreezing location is required,
contact Trane for installation precautions required
to prevent damage.
• If using an acidic, commercial flushing solution to
prevent damage to the internal evaporator
components, flush all chilled solution piping before
making the final connection to the EVP chiller.
TXV for Remote Chiller
Piping between TXV and Chiller, a braze plate heat
exchanger (BPHE), must be 8-12” long and same size
as BPHE inlet ID. Field supplied reducer(s) may be
required at TXV. A bleed port valve is not required with
brazed plate heat exchanger applications.
NNootteess::
• Install reducers at the TXV outlet only.
• See Dimensions and Weights chapter for
BPHE inlet dimensions.
• See Expansion Valve Selection tables in the
Installation Mechanical chapter for valve
selections.
Typical Field-Installed EVP
Chiller Evaporator Piping
NNOOTTIICCEE
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ccoonnnneeccttiioonnss.. UUssee fflluuxx ssppaarriinnggllyy ttoo pprreevveenntt
pplluuggggiinngg hheeaatt eexxcchhaannggeerr ffllooww ppaassssaaggeess..
1. Install the TXV(s) directly to the unit liquid
connection. See TXV recommendations in the Tube
Size and Component Selection Application Guide,
publication number SS-APG012-EN.
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rreeffrriiggeerraanntt ddiissttrriibbuuttiioonn,, aann 88--1122”” ssttuubb ttuubbee mmuusstt
bbee bbrraazzeedd bbeettwweeeenn tthhee eexxppaannssiioonn vvaallvvee aanndd tthhee
cchhiilllleerr eenntteerriinngg rreeffrriiggeerraanntt ccoonnnneeccttiioonn.. TThhiiss ttuubbee
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ddiimmeennssiioonnss..
2. Locate TXV bulb on top of the suction line 12” from
the heat exchanger outlet.
3. Secure the bulb to the suction line with two clamps
provided by the manufacturer and insulate the bulb.
4. Locate liquid line solenoid valve(s) near TXV.
5. Install the Frostat™ according to instructions
enclosed in the kit as close to the evaporator as
possible.
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